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遥感技术与应用 1988年第3期 51-52页

作者：尹泳龙

目前采用的遥感数据资料中,最普及的是美国landsat data,其中MSS和TM data最多。从1972年至1982年,landsat处于实验阶段,以普及价格提供资料。而1983年开始,landsat进入了实用阶段,把数据资料作为商品高价出售。由于价格的提高,销售数... 详细信息

目前采用的遥感数据资料中,最普及的是美国landsat data,其中MSS和TM data最多。从1972年至1982年,landsat处于实验阶段,以普及价格提供资料。而1983年开始,landsat进入了实用阶段,把数据资料作为商品高价出售。由于价格的提高,销售数是明显下降,但经济收入并没有下降多少。从1979年至1986年,landsat data供销情况,如表一所示。

关键词：彩色片 CCT 供销 landsat data 分类情况美国美利坚合众国北美洲

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Area,lake-level and volume variations of typical lakes on the Tibetan Plateau and their response to climate change,1972-2019

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Geo-Spatial Information Science 2021年第3期24卷 458-473页

作者： Ju Zhang Qingwu Hu Yingkui Li Haidong Li Jiayuan Li School of Remote Sensing and Information Engineering Wuhan UniversityWuhanChina Department of Geography University of TennesseeKnoxvilleTNUSA Nanjing Institute of Environmental Sciences Ministry of Environmental ProtectionNanjingChina

Most lakes have undergone significant changes on the Tibetan Plateau in recent decades,affecting water resources on the Tibetan Plateau and its surrounding *** this paper,we investigated the variations of 25 lakes in five sub-regions on the Tibetan Plateau from 1972 to 2019 based on SRTM DEM data and landsat *** used a method to derive lake-levels based on DEM and lake boundaries delineated from landsat imagery,and then calculated the changes in lake area,level,and volume in 1972 to *** also analyzed the potential impacts of temperature,precipitation,glacial and permafrost melting in lake changes during this *** results show that the lakes tended to shrink until 2010 in southern and western plateau,after which they began to expand gradually but the overall trend is still *** meltwater from glaciers and permafrost and low precipitation are the main reasons for their *** lakes in the central plateau,northwest plateau and northeast plateau tend to expand *** reason for the expansion of the lakes is not only precipitation but also the melting of glaciers and ***,the lake changes have gone through 3 phases,namely a slight decrease during 1972-2000,a rapid increase during 2000-2010,and a slowdown in the last decade(2010-2019).Multiple factors such as temperature,precipitation,the state of glaciers and permafrost have contributed to the changes in the lake.

关键词： Tibetan Plateau lake variations Shuttle Radar Topography Mission(SRTM)data landsat data climate change

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Analysis of coastal land use/land cover changes in the Indian Sunderbans using remotely sensed data

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Geo-Spatial Information Science 2012年第4期15卷 241-250页

作者： Debajit DATTA Shovik DEB Department of Agricultural and Food Engineering Indian Institute of TechnologyKharagpurWest Bengal 721302India Department of Geography Taki Government CollegeTakiWest Bengal 743429India

The world’s largest mangrove ecosystem,the Sunderbans is experiencing multidimensional threats of *** present study was aimed to understand these problems and search for proper remedies by applying suitable remote sensing ***-western parts of Indian Sunderbans Biosphere Reserve had been chosen for assessment of land use/land cover changes in between 1975 and 2006 by using multitemporal landsat *** indicated considerable reduction of open mangrove stands and associated biodiversity mainly in the forest-habitation interference zones of *** the contrary,increase in the coverage of dense mangroves in the reserved forests had been observed indicating the existence of proper centralized management ***,a cumulative loss of approximately 0.42%of its original mangrove cover in between 1975 and 2006 had been estimated for this part of the Sunderbans which was at parity with the findings of other studies in the Sunderbans or similar mangrove ecosystems of the *** of non agricultural lands in the last two decades was found to be related with the growth of new settlements,tourism infrastructure,and *** transformation was attributed to the shifting of local peoples’interest from traditional forestry and subsistence farming towards alternative occupations like shrimp culture,coastal tourism,and commercial fishing although environmentally hazardous livelihood activities like collection of prawn seeds along the riverbanks were still persistent.

关键词： sustainable mangrove management landsat data land use/land cover changes

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Analysis of Spatio-temporal Land Surface Temperature and Normalized Difference Vegetation Index Changes in the Andassa Watershed, Blue Nile Basin, Ethiopia

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Journal of Resources and Ecology 2019年第1期10卷 77-85页

作者： Melkamu Meseret Alemu School of Earth Sciences Bahir Dar UniversityP.o.Box 79Ethiopia Geospatial data and Technology Center (GDTC) Bahir Dar UniversityP.o.Box 79Ethiopia

Analysis of the nexus between vegetation dynamics and climatic parameters like surface temperature is essential in environmental and ecological studies and for monitoring of the natural resources. This study explored the spatio-temporal distribution of land surface temperature(LST) and Normalized Difference Vegetation Index(NDVI) and the relationship between them in the Andassa watershed from 1986 to 2016 periods using landsat data. Monthly average air temperature data of three meteorological sites were used for validating the results. The findings of the study showed that the LST of the Andassa watershed has increased during the study periods. Overall, average LST has been rising with an increasing rate of 0.081?C per year. Other results of this study also showed that there has been a dynamic change in vegetation cover of the watershed in all seasons. There was also a negative correlation between LST and NDVI in all the studied years. From this study we can understand that there has been degradation of vegetation and intensification of LST from 1986 to 2016.

关键词： landsat data land surface temperature(LST) NDVI vegetation cover

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